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Semiparametric diffusion estimation and application to a stock market index

Härdle, Wolfgang; Kleinow, Torsten; Korostelev, … - 2001

The analysis of diffusion processes in financial models is crucially dependent on the form of the drift and diffusion coefficient functions. A methodology is proposed for estimating and testing coefficient functions for ergodic diffusions that are not directly observable. It is based on...

Persistent link: https://www.econbiz.de/10009613611

The dynamics of implied volatilities : a common principal components approach

Fengler, Matthias R.; Härdle, Wolfgang; Villa, Christophe - 2001

It is common practice to identify the number and sources of shocks that move implied volatilities across space and time by applying Principal Components Analysis (PCA) to pooled covariance matrices of changes in implied volatilities. This approach, however, is likely to result in a loss of...

Persistent link: https://www.econbiz.de/10009613597

Forecasting the real output using fractionally integrated techniques

Gil-Alaña, Luis A. - 2001

The annual structure of the real GDP in the UK, France, Germany and Italy is examined in this article by means of …

Persistent link: https://www.econbiz.de/10009613608

Nonlinear GARCH models for highly persistent volatility

Lanne, Markku; Saikkonen, Pentti - 2002

In this paper we study new nonlinear GARCH models mainly designed for time series with highly persistent volatility. For such series, conventional GARCH models have often proved unsatisfactory because they tend to exaggerate volatility persistence and exhibit poor forecasting ability. Our main...

Persistent link: https://www.econbiz.de/10009621424

Semiparametric modelling of the cross-section of expected returns in the German stock market

Stehle, Richard; Bunke, Olaf; Sommerfeld, Volker - 1997

a comparable data set for Germany for the time period 1968-1990. We analyze this data set in order to identify a "best …/French for US stock returns is almost the best one in Germany. The book-to-market-ratio turns out to be the variable with highest …

Persistent link: https://www.econbiz.de/10009661022

On model based seasonal adjustment procedures

Breitung, Jörg - 1998

In this note the unobserved component approach underlying the software package SEATS is compared with the Beveridge-Nelson type of decomposition for seasonal time series. The main strength of the SEATS approach lies in the appealing model formulation and the careful specification and adjustment...

Persistent link: https://www.econbiz.de/10009574877

Semiparametric bootstrap approach to hypothesis tests and confidence intervals for the hurst coefficient

Hall, Peter; Härdle, Wolfgang; Kleinow, Torsten; … - 1999

the price of a commodity, currency or similar quantity. Interval estimation and hypothesis testing for H are central to …

Persistent link: https://www.econbiz.de/10009581110

Fractional cointegration and real exchange rates

Caporale, Guglielmo Maria; Gil-Alaña, Luis A. - 2000

This paper uses fractional integration and cointegration in order to model the DM/dollar and the yen/dollar real exchange rates in terms of both monetary and real factors, more specifically real interest rate and labour productivity differentials. We find that whilst the individual series may be...

Persistent link: https://www.econbiz.de/10009611542

Common cycles : a frequency domain approach

Breitung, Jörg; Candelon, Bertrand - 2000

series with a zero spectral density at some frequency. Estimation and inference can be performed using an Instrumental … an analysis of the comovement between Germany, Austria and the United Kingdom is presented. -- common feature analysis …

Persistent link: https://www.econbiz.de/10009612024

Estimation and testing for varying coefficients in additive models with marginal integration

Yang, Lijian; Härdle, Wolfgang; Park, Byeong U. - 2002

We propose marginal integration estimation and testing methods for the coefficients of varying coefficient multivariate … regression model. Asymptotic distribution theory is developed for the estimation method which enjoys the same rate of convergence … as univariate function estimation. For the test statistic, asymptotic normal theory is established. These theoretical …

Persistent link: https://www.econbiz.de/10009627286